Manfrotto New Style Shallow Throat Lock Knob - 6 pack

SKU:002256
Part #: R190,05K
Part condition: NEW
Substitute part: R055,68

This part also fits: 190, 190B, 290, 290B, 3411

Check the old part to see if it requires a "Deep Throat" on the knob to clear the clamp when tightening.